RulerCtrl

RulerCtrl implements a ruler window that can be placed on top, bottom, left or right to any wxPython widget. It is somewhat similar to the rulers you can find in text editors software, though not so powerful.

Inheritance Diagram

Inheritance diagram for: RulerCtrl

Control Appearance

RulerCtrl

Methods Summary

__init__	Default class constructor.
AddIndicator	Adds an indicator to RulerCtrl. You should pass a unique id and a starting
CheckStyle	Adjust the RulerCtrl style accordingly to borders, units, etc...
Draw	Actually draws the whole RulerCtrl.
DrawOnParent	Actually draws the thin line over the drawing parent window.
FindLinearTickSizes	Used internally.
GetBounds	Returns the RulerCtrl bounds (its client rectangle).
GetDrawingParent	Returns the window to which RulerCtrl draws a thin line over.
GetFormat	Returns the format used to display values in RulerCtrl.
GetIndicator	Returns the indicator located at the mouse position mousePos (if any).
GetTimeFormat	Returns the time format.
Invalidate	Invalidates the ticks calculations.
LabelMajor	Sets whether the major ticks should be labeled or not.
LabelMinor	Sets whether the minor ticks should be labeled or not.
LabelString	Used internally.
OfflimitsPixels	Used internally.
OnEraseBackground	Handles the wx.EVT_ERASE_BACKGROUND event for RulerCtrl.
OnMouseEvents	Handles the wx.EVT_MOUSE_EVENTS event for RulerCtrl.
OnPaint	Handles the wx.EVT_PAINT event for RulerCtrl.
OnSize	Handles the wx.EVT_SIZE event for RulerCtrl.
SetBackgroundColour	Sets the RulerCtrl background colour.
SetBounds	Sets the bounds for RulerCtrl (its client rectangle).
SetDrawingParent	Sets the window to which RulerCtrl draws a thin line over.
SetFlip	Sets whether the orientation of the tick marks should be reversed.
SetFonts	Sets the fonts for minor and major tick labels.
SetFormat	Sets the format for RulerCtrl.
SetIndicatorColour	Sets the indicator colour.
SetIndicatorValue	Sets the indicator value.
SetLabelColour	Sets the labels colour.
SetLabelEdges	Sets whether the edge values should always be displayed or not.
SetLog	Sets whether RulerCtrl should have a logarithmic scale or not.
SetOrientation	Sets the RulerCtrl orientation.
SetRange	Sets the RulerCtrl range.
SetSpacing	Sets the RulerCtrl spacing between labels.
SetTickPenColour	Sets the pen colour to draw the ticks.
SetTimeFormat	Sets the time format.
SetUnits	Sets the units that should be displayed beside the labels.
Tick	Ticks a particular position.
TickMajor	Sets whether the major ticks should be ticked or not.
TickMinor	Sets whether the minor ticks should be ticked or not.
Update	Updates all the ticks calculations.

Class API

class RulerCtrl(wx.PyPanel)

RulerCtrl implements a ruler window that can be placed on top, bottom, left or right to any wxPython widget. It is somewhat similar to the rulers you can find in text editors software, though not so powerful.

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__init__(parent, id=-1, pos=wx.DefaultPosition, size=wx.DefaultSize, style=wx.STATIC_BORDER, orient=wx.HORIZONTAL)

Default class constructor.

Parameters:

• parent – parent window. Must not be None;
• id – window identifier. A value of -1 indicates a default value;
• pos – the control position. A value of (-1, -1) indicates a default position, chosen by either the windowing system or wxPython, depending on platform;
• size – the control size. A value of (-1, -1) indicates a default size, chosen by either the windowing system or wxPython, depending on platform;
• style – the window style;
• orient – sets the orientation of the RulerCtrl, and can be either wx.HORIZONTAL of wx.VERTICAL.

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AddIndicator(id, value)

Adds an indicator to RulerCtrl. You should pass a unique id and a starting value for the indicator.

Parameters:

• id – the indicator identifier;
• value – the indicator initial value.

---

CheckStyle()

Adjust the RulerCtrl style accordingly to borders, units, etc...

---

Draw(dc)

Actually draws the whole RulerCtrl.

Parameters:dc – an instance of wx.DC.

---

DrawOnParent(indicator)

Actually draws the thin line over the drawing parent window.

Parameters:indicator – the current indicator, an instance of Indicator.

Note

This method is currently not available on wxMac as it uses wx.ScreenDC.

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FindLinearTickSizes(UPP)

Used internally.

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GetBounds()

Returns the RulerCtrl bounds (its client rectangle).

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GetDrawingParent()

Returns the window to which RulerCtrl draws a thin line over.

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GetFormat()

Returns the format used to display values in RulerCtrl.

See also

SetFormat for a list of possible formats.

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GetIndicator(mousePos)

Returns the indicator located at the mouse position mousePos (if any).

Parameters:mousePos – the mouse position, an instance of wx.Point.

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GetTimeFormat()

Returns the time format.

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Invalidate()

Invalidates the ticks calculations.

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LabelMajor(label=True)

Sets whether the major ticks should be labeled or not.

Parameters:label – True to label major ticks, False otherwise.

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LabelMinor(label=True)

Sets whether the minor ticks should be labeled or not.

Parameters:label – True to label minor ticks, False otherwise.

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LabelString(d, major=None)

Used internally.

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OfflimitsPixels(start, end)

Used internally.

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OnEraseBackground(event)

Handles the wx.EVT_ERASE_BACKGROUND event for RulerCtrl.

Parameters:event – a wx.EraseEvent event to be processed.

Note

This method is intentionally empty to reduce flicker.

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OnMouseEvents(event)

Handles the wx.EVT_MOUSE_EVENTS event for RulerCtrl.

Parameters:event – a wx.MouseEvent event to be processed.

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OnPaint(event)

Handles the wx.EVT_PAINT event for RulerCtrl.

Parameters:event – a wx.PaintEvent event to be processed.

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OnSize(event)

Handles the wx.EVT_SIZE event for RulerCtrl.

Parameters:event – a wx.SizeEvent event to be processed.

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SetBackgroundColour(colour)

Sets the RulerCtrl background colour.

Parameters:colour – an instance of wx.Colour.

Note

Overridden from wx.PyPanel.

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SetBounds(left, top, right, bottom)

Sets the bounds for RulerCtrl (its client rectangle).

Parameters:

• left – the left corner of the client rectangle;
• top – the top corner of the client rectangle;
• right – the right corner of the client rectangle;
• bottom – the bottom corner of the client rectangle.

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SetDrawingParent(dparent)

Sets the window to which RulerCtrl draws a thin line over.

Parameters:dparent – an instance of wx.Window, representing the window to which RulerCtrl draws a thin line over.

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SetFlip(flip=True)

Sets whether the orientation of the tick marks should be reversed.

Parameters:flip – True to reverse the orientation of the tick marks, False otherwise.

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SetFonts(minorFont, majorFont)

Sets the fonts for minor and major tick labels.

Parameters:

• minorFont – the font used to draw minor ticks, a valid wx.Font object;
• majorFont – the font used to draw major ticks, a valid wx.Font object.

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SetFormat(format)

Sets the format for RulerCtrl.

Parameters:format – the format used to display values in RulerCtrl. This can be one of the following bits:

Format	Value	Description
IntFormat	1	Integer format
RealFormat	2	Real format
TimeFormat	3	Time format
LinearDBFormat	4	Linear DB format
HHMMSS_Format	5	HHMMSS format

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SetIndicatorColour(id, colour=None)

Sets the indicator colour.

Parameters:

• id – the indicator identifier;
• colour – a valid wx.Colour object.

Note

This method requires PIL to change the image palette.

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SetIndicatorValue(sendEvent=True)

Sets the indicator value.

Parameters:sendEvent – True to send a RulerCtrlEvent, False otherwise.

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SetLabelColour(colour=wx.BLACK)

Sets the labels colour.

Parameters:colour – a valid wx.Colour object.

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SetLabelEdges(labelEdges=True)

Sets whether the edge values should always be displayed or not.

Parameters:labelEdges – True to always display edge labels, False otherwise/

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SetLog(log=True)

Sets whether RulerCtrl should have a logarithmic scale or not.

Parameters:log – True to use a logarithmic scake, False to use a linear one.

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SetOrientation(orient=None)

Sets the RulerCtrl orientation.

Parameters:orient – can be wx.HORIZONTAL or wx.VERTICAL.

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SetRange(minVal, maxVal)

Sets the RulerCtrl range.

Parameters:

• minVal – the minimum value of RulerCtrl;
• maxVal – the maximum value of RulerCtrl.

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SetSpacing(spacing)

Sets the RulerCtrl spacing between labels.

Parameters:spacing – the spacing between labels, in pixels.

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SetTickPenColour(colour=wx.BLACK)

Sets the pen colour to draw the ticks.

Parameters:colour – a valid wx.Colour object.

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SetTimeFormat(format=TimeFormat)

Sets the time format.

Parameters:format – the format used to display time values.

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SetUnits(units)

Sets the units that should be displayed beside the labels.

Parameters:units – the units that should be displayed beside the labels.

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Tick(dc, pos, d, major)

Ticks a particular position.

Parameters:

• dc – an instance of wx.DC;

• pos – the label position;
• d – the current label value;
• major – True if it is a major ticks, False if it is a minor one.

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TickMajor(tick=True)

Sets whether the major ticks should be ticked or not.

Parameters:tick – True to show major ticks, False otherwise.

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TickMinor(tick=True)

Sets whether the minor ticks should be ticked or not.

Parameters:tick – True to show minor ticks, False otherwise.

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Update(dc)

Updates all the ticks calculations.

Parameters:dc – an instance of wx.DC.

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